Choosing an S&P 500 ETF sounds straightforward. Decide to invest in large US companies, pick a low-cost fund, and get on with it. Then the ticker symbols arrive: VOO, IVV, SPY, VUSD, CSPX and SPY5. They follow the same stock market, so why does the choice matter?
For a Singapore-based investor, fees, dividends and the fund’s domicile are useful starting points. The choice also depends on whether you want cash distributions or prefer to keep that income invested.
Updated 13 October 2026. This comparison is written for a Singapore-resident individual who is not a US person, investing personally. Different citizenship, residence or ownership arrangements can change the tax treatment.
US versus Ireland domicile: the main differences
Domicile means the country where the fund is legally established. It is different from the exchange where you buy it, the currency used to trade it, and the countries where its underlying companies do business.
| What matters | US-domiciled ETF | Ireland-domiciled physical UCITS ETF |
|---|---|---|
| Examples | VOO, IVV, SPY | VUSD, CSPX, SPY5, VUAA, SPYL |
| Underlying exposure | Large US companies in the S&P 500 | Broadly the same S&P 500 exposure |
| Ordinary US dividend tax for the investor described above | Generally 30% withheld from distributions | Generally 15% on US stock dividends received inside the fund |
| Income choices in this article | Cash distributions | Cash distributions or automatic reinvestment |
| US estate-tax exposure | Generally US-situated assets | Shares in Irish corporate funds generally fall outside US-situated assets |
| Where the examples trade | US exchanges | USD trading lines on the London Stock Exchange |
Current fund fees at a glance
Here are eight S&P 500 ETFs to compare, including accumulating options for investors who want dividends reinvested. All aim to track the S&P 500; buying several does not create a new layer of stock-market diversification.
| ETF / provider | Domicile | Annual charge | Cost per US$10,000 | Income |
|---|---|---|---|---|
| VOO — Vanguard | US | 0.03% | US$3 | Distributing |
| IVV — iShares | US | 0.03% | US$3 | Distributing |
| SPY — State Street | US | 0.0945% | US$9.45 | Distributing |
| VUSD — Vanguard | Ireland | 0.07% | US$7 | Distributing |
| CSPX — iShares | Ireland | 0.07% | US$7 | Accumulating |
| SPY5 — State Street | Ireland | 0.03% | US$3 | Distributing |
| VUAA — Vanguard | Ireland | 0.07% | US$7 | Accumulating |
| SPYL — State Street | Ireland | 0.03% | US$3 | Accumulating |
SPY5 and SPYL each have a 0.03% annual charge, compared with 0.07% for VUSD, CSPX and VUAA. Still, a four-dollar annual fee difference on US$10,000 can easily be outweighed by trading costs.
Fund charges are reflected in the fund’s value, rather than usually appearing as a separate bill. Check the current spread and order size on your broker before trading.
Why 30% versus 15% needs an explanation
For the Singapore investor described above, ordinary dividends from a US ETF generally face 30% US withholding. The Irish route works at a different level: the Irish fund receives dividends from US companies and generally benefits from the treaty’s 15% rate, subject to eligibility.
That tax has already reduced the money available to the Irish fund. It is not normally another 15% deduction from your brokerage account when an Irish ETF distributes the remaining income. Irish ETFs held through a recognised clearing system generally do not deduct Irish fund exit tax on that payment. Personal tax obligations depend on the investor’s circumstances.
| Illustrative dividend flow | US ETF | Irish physical ETF |
|---|---|---|
| Gross underlying dividends assumed | US$100 | US$100 |
| US withholding in this simplified example | US$30 at investor distribution level | US$15 at fund level |
| Remaining before other costs and taxes | US$70 | US$85 |
| Where it goes | Cash paid to investor | Paid out or retained, depending on share class |
The saving is 15% of the dividend amount, not 15% of the whole investment. For example, if a US$10,000 portfolio generated a hypothetical 1% gross dividend yield, the difference would be US$15 a year before other costs. That 1% is an assumption, not a current quoted yield or a promised return.
Accumulating does not mean tax-free
| Question | Accumulating | Distributing |
|---|---|---|
| What happens to income? | The fund retains and reinvests it | The fund pays cash distributions |
| Examples here | CSPX, VUAA, SPYL | VOO, IVV, SPY, VUSD, SPY5 |
| Useful when | You want income to remain invested | You want cash or control over reinvestment |
| Does it remove underlying withholding? | No | No |
An accumulating fund saves you the step of reinvesting cash. It does not avoid the tax already withheld from the fund’s underlying dividends. A distributing fund’s payout also is not extra return on top of its value: the distribution reduces NAV, all else equal.
How US estate tax affects the choice
The US$60,000 figure is generally a filing threshold for a nonresident noncitizen’s US-situated estate, with adjusted taxable gifts also relevant. It is not a rule that every dollar above that amount is automatically taxed at 40%.
Actual liability uses the applicable tax calculation, credits, deductions and any treaty relief. The threshold is across relevant US-situated assets, not a separate allowance for each ETF or broker. Income-tax residence and estate-tax domicile also use different tests.
US ETF holdings generally bring this exposure; using a Singapore broker does not remove it. Shares in an Irish corporate fund are generally non-US-situated even when that fund owns US stocks. This is a reason to consider domicile for a long-term holding, but unusual ownership or expatriation circumstances need professional advice. Sources: IRS estate-tax FAQ and asset-location rules.
What stays the same whichever fund I choose
These funds remain investments in US equities. A different domicile does not protect against a market fall, reduce the S&P 500’s exposure to its largest companies, or add developed and emerging markets outside the US. Their portfolios substantially overlap because they follow the same index.
For this domicile comparison, the useful distinction is the fund structure and the return you keep after costs and taxes. A provider’s published total return is not automatically your personal after-tax return. Comparing a distributing ETF’s price chart with an accumulating ETF’s price chart would also leave dividends out of one side.
Trading in USD, GBP or another currency does not by itself hedge currency risk. The trading currency tells you how the order is settled; it does not change the underlying US share exposure.
Which would I shortlist?
| Situation | Starting point | What to check |
|---|---|---|
| Singapore-based, long-term reinvestment | CSPX, VUAA or SPYL | Total costs, spread, broker access and share-class details |
| Singapore-based, wants cash distributions | VUSD or SPY5 | Net cash received, fees and payout timing |
| Needs US-listed trading or options | VOO, IVV or SPY | Live liquidity, contract availability, withholding and estate exposure |
| US citizen or other US tax person | A separate US-tax review | Do not apply this Singapore non-US-person comparison; foreign funds can introduce passive foreign investment company (PFIC) tax and reporting issues |
An Irish fund is a useful starting point for a Singapore-based, non-US investor holding for the long term. But the ticker choice should follow the income policy and full costs, alongside current fees. For someone trading frequently, execution needs may lead to a different decision.
Before placing the order
Confirm the fund’s full name, domicile, ISIN, exchange and trading currency in your broker. VUSD and VUSA, for example, can be different trading lines of the same distributing share class; a ticker alone is not enough. Check whether fractional purchases are supported, and compare commission minimums, foreign-exchange costs and the bid–ask spread. Use a limit order at a price you are willing to pay.
The S&P 500 choice itself deserves attention too. If you are deciding between US-only and global exposure, my CSPX versus IWDA versus VWRA comparison looks at that earlier decision. Once the exposure is right, choosing a suitable fund should make investing easier to maintain.
This article is for general information, not personal investment, legal or tax advice. Fees and rules can change. Investments and distributions can fall, and your circumstances may require advice from a qualified tax professional.
